So this was my competency exam tooth, an gold onlay #19.
An onlay preparation is one of the hardest preparations you can do, as it takes lots of little specific angles and bevels and all sorts little ledges.  Well, for a competency, you have to do the whole thing, start to finish, without anyone's help in the least.
Here is what happened...which was great btw.

Here is what the tooth looks like all prepared.  We took an impression and then went to the lab to make some GOLD.

So now, we make sure it looks really nice, polished it up, try it in the mouth and then adjust the crown as necessary to make sure it fits how he bites and chews.  Then...CEMENT.

There we go, now that's how you polish a gold crown.  On a side note, I'm sure no one knows what this is, but I have a passion for secondary anatomy (don't take that the wrong way!)

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